"We have 21st-century medical treatments and drugs to treat cancer, but we still have 20th-century procedures and processes for diagnosis," says Jorge Soto. James Duncan Davidson/TED hide caption

itoggle caption James Duncan Davidson/TED

A pedestrian crosses in front of a vehicle as part of a demonstration at Mcity on July 20, on the University of Michigan campus in Ann Arbor, Mich. Paul Sancya/AP hide caption

itoggle caption Paul Sancya/AP

The Japanese supercomputer K, pictured in June 2012 at the RIKEN Advanced Institute for Computational Science in Kobe, western Japan. The K computer is currently ranked No. 3 on a list of the 500 fastest supercomputers. Kyodo/Landov hide caption

itoggle caption Kyodo/Landov

A piece of a wing, apparently from a Boeing 777, has been found on Reunion, an island in the Indian Ocean. It's not clear yet whether the debris is from the Malaysia Airlines jet that disappeared from radar during a flight last year. Yannick Pitou/AFP/Getty Images hide caption

itoggle caption Yannick Pitou/AFP/Getty Images

Customers try out cellphones and tablets in a store in Tehran, in 2012. Financial sanctions make it difficult for U.S. firms to do business in Iran, analysts say. Vahid Salemi/AP hide caption

itoggle caption Vahid Salemi/AP